139 lines
4.4 KiB
Erlang
139 lines
4.4 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : mod_last_odbc.erl
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%%% Author : Alexey Shchepin <alexey@sevcom.net>
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%%% Purpose : jabber:iq:last support (JEP-0012)
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%%% Created : 24 Oct 2003 by Alexey Shchepin <alexey@sevcom.net>
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%%% Id : $Id$
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%%%----------------------------------------------------------------------
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-module(mod_last_odbc).
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-author('alexey@sevcom.net').
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-vsn('$Revision$ ').
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-behaviour(gen_mod).
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-export([start/2,
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stop/1,
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process_local_iq/3,
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process_sm_iq/3,
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on_presence_update/4,
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store_last_info/4,
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remove_user/2]).
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-include("ejabberd.hrl").
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-include("jlib.hrl").
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start(Host, Opts) ->
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IQDisc = gen_mod:get_opt(iqdisc, Opts, one_queue),
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gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_LAST,
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?MODULE, process_local_iq, IQDisc),
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gen_iq_handler:add_iq_handler(ejabberd_sm, Host, ?NS_LAST,
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?MODULE, process_sm_iq, IQDisc),
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ejabberd_hooks:add(remove_user, Host,
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?MODULE, remove_user, 50),
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ejabberd_hooks:add(unset_presence_hook, Host,
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?MODULE, on_presence_update, 50).
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stop(Host) ->
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ejabberd_hooks:delete(remove_user, Host,
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?MODULE, remove_user, 50),
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ejabberd_hooks:delete(unset_presence_hook, Host,
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?MODULE, on_presence_update, 50),
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gen_iq_handler:remove_iq_handler(ejabberd_local, Host, ?NS_LAST),
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gen_iq_handler:remove_iq_handler(ejabberd_sm, Host, ?NS_LAST).
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process_local_iq(_From, _To, #iq{type = Type, sub_el = SubEl} = IQ) ->
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case Type of
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set ->
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IQ#iq{type = error, sub_el = [SubEl, ?ERR_NOT_ALLOWED]};
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get ->
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Sec = trunc(element(1, erlang:statistics(wall_clock))/1000),
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IQ#iq{type = result,
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sub_el = [{xmlelement, "query",
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[{"xmlns", ?NS_LAST},
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{"seconds", integer_to_list(Sec)}],
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[]}]}
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end.
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process_sm_iq(From, To, #iq{type = Type, sub_el = SubEl} = IQ) ->
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case Type of
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set ->
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IQ#iq{type = error, sub_el = [SubEl, ?ERR_NOT_ALLOWED]};
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get ->
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User = To#jid.luser,
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Server = To#jid.lserver,
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{Subscription, _Groups} =
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ejabberd_hooks:run_fold(
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roster_get_jid_info, Server,
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{none, []}, [User, Server, From]),
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if
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(Subscription == both) or (Subscription == from) ->
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case catch mod_privacy:get_user_list(User, Server) of
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{'EXIT', _Reason} ->
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get_last(IQ, SubEl, User, Server);
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List ->
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case catch mod_privacy:check_packet(
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User, Server, List,
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{From, To,
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{xmlelement, "presence", [], []}},
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out) of
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{'EXIT', _Reason} ->
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get_last(IQ, SubEl, User, Server);
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allow ->
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get_last(IQ, SubEl, User, Server);
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deny ->
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IQ#iq{type = error,
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sub_el = [SubEl, ?ERR_NOT_ALLOWED]}
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end
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end;
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true ->
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IQ#iq{type = error,
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sub_el = [SubEl, ?ERR_NOT_ALLOWED]}
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end
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end.
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get_last(IQ, SubEl, LUser, LServer) ->
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Username = ejabberd_odbc:escape(LUser),
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case catch odbc_queries:get_last(LServer, Username) of
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{'EXIT', _Reason} ->
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IQ#iq{type = error, sub_el = [SubEl, ?ERR_INTERNAL_SERVER_ERROR]};
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{selected, ["seconds","state"], []} ->
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IQ#iq{type = error, sub_el = [SubEl, ?ERR_SERVICE_UNAVAILABLE]};
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{selected, ["seconds","state"], [{STimeStamp, Status}]} ->
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case catch list_to_integer(STimeStamp) of
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TimeStamp when is_integer(TimeStamp) ->
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{MegaSecs, Secs, _MicroSecs} = now(),
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TimeStamp2 = MegaSecs * 1000000 + Secs,
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Sec = TimeStamp2 - TimeStamp,
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IQ#iq{type = result,
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sub_el = [{xmlelement, "query",
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[{"xmlns", ?NS_LAST},
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{"seconds", integer_to_list(Sec)}],
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[{xmlcdata, Status}]}]};
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_ ->
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IQ#iq{type = error,
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sub_el = [SubEl, ?ERR_INTERNAL_SERVER_ERROR]}
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end
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end.
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on_presence_update(User, Server, _Resource, Status) ->
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{MegaSecs, Secs, _MicroSecs} = now(),
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TimeStamp = MegaSecs * 1000000 + Secs,
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store_last_info(User, Server, TimeStamp, Status).
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store_last_info(User, Server, TimeStamp, Status) ->
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LUser = jlib:nodeprep(User),
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LServer = jlib:nameprep(Server),
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Username = ejabberd_odbc:escape(LUser),
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Seconds = ejabberd_odbc:escape(integer_to_list(TimeStamp)),
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State = ejabberd_odbc:escape(Status),
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odbc_queries:set_last_t(LServer, Username, Seconds, State).
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remove_user(User, Server) ->
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LUser = jlib:nodeprep(User),
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LServer = jlib:nameprep(Server),
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Username = ejabberd_odbc:escape(LUser),
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odbc_queries:del_last(LServer, Username).
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